{"instruction": "You are an expert in event argument extraction. Please extract event arguments and their roles from the input that conform to the schema definition, which already includes event trigger words. If an argument does not exist, return NAN or an empty dictionary. Please respond in the format of a JSON string.", "schema": [{"event_type": "patch vulnerability", "arguments": ["supported platform", "vulnerable system", "vulnerable system version", "time", "common vulnerabilities and exposures", "patch number", "issues addressed", "vulnerability", "patch", "releaser"]}], "input": "The device manufacturer acquired St Jude Medical last year and has since been working to fix severe vulnerabilities found in its pacemakers ."}
{"patch vulnerability": [{"supported platform": "NAN", "vulnerable system": "its pacemakers", "vulnerable system version": "NAN", "time": "NAN", "common vulnerabilities and exposures": "NAN", "patch number": "NAN", "issues addressed": "NAN", "vulnerability": "severe vulnerabilities", "patch": "NAN", "releaser": "The device manufacturer"}]}